WO2023245766A1 - Processus de construction de dégagement de tête de pieu dcm sous-marin respectueux de l'environnement - Google Patents

Processus de construction de dégagement de tête de pieu dcm sous-marin respectueux de l'environnement Download PDF

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Publication number
WO2023245766A1
WO2023245766A1 PCT/CN2022/105388 CN2022105388W WO2023245766A1 WO 2023245766 A1 WO2023245766 A1 WO 2023245766A1 CN 2022105388 W CN2022105388 W CN 2022105388W WO 2023245766 A1 WO2023245766 A1 WO 2023245766A1
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WO
WIPO (PCT)
Prior art keywords
excavation
dcm
breaking
pile head
platform
Prior art date
Application number
PCT/CN2022/105388
Other languages
English (en)
Chinese (zh)
Inventor
马定强
黎忠豪
廖曾平
钟旭华
杨振华
张鹏
喻明杰
张营开
胡前
罗自强
李川
郑文进
Original Assignee
中交广州航道局有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中交广州航道局有限公司 filed Critical 中交广州航道局有限公司
Publication of WO2023245766A1 publication Critical patent/WO2023245766A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
    • E02D9/04—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by cutting-off under water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/04—Guide devices; Guide frames
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00—Testing foundations or foundation structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/47—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor with grab buckets
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/48—Drag-lines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/58—Component parts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/58—Component parts
    • E02F3/60—Buckets, scrapers, or other digging elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/006—Dredgers or soil-shifting machines for special purposes adapted for working ground under water not otherwise provided for
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/06—Floating substructures as supports
    • E02F9/062—Advancing equipment, e.g. spuds for floating dredgers
    • E02F9/065—Advancing equipment, e.g. spuds for floating dredgers characterised by the use of lines with anchors and winches
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/14—Booms only for booms with cable suspension arrangements; Cable suspensions
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • E02F9/2029—Controlling the position of implements in function of its load, e.g. modifying the attitude of implements in accordance to vehicle speed

Definitions

  • the invention relates to the field of submarine DCM pile head removal construction technology, specifically an environmentally friendly submarine DCM pile head removal construction technology.
  • Underwater deep cement mixing pile (referred to as DCM pile) is an advanced underwater soft foundation treatment technology that uses cement as a curing agent.
  • the soft soil or sand and the curing agent are forcibly mixed in the foundation through a deep mixing machine to harden the soft foundation. Improving the strength of the foundation is one of the key technologies for realizing large-scale projects such as undersea tunnels.
  • overgrouting is generally performed, and the height of the overgrouting is generally 0.5-1.0m.
  • the pile bodies of DCM piles that exceed the design elevation of the foundation trench need to be removed. , ensure that the excavation elevation of the subsea tunnel foundation trench meets the design requirements
  • the present invention proposes an environmentally friendly seabed DCM pile head cleaning construction technology.
  • an environmentally friendly seabed DCM pile head removal construction process according to the present invention, which construction process includes the following steps:
  • S1 Overhaul various construction equipment of the water breaking and excavation platform, and prepare for the breaking and excavation of the main body of the DCM pile head;
  • S2 Move the water-based breaking and excavation platform above the area to be broken and excavated, and import the drawn DCM pile head main body breaking and excavation point layout into the GPS control system of the DCM pile head main body breaking and excavation control room.
  • the anchor cable is used to fix the above-water demolition and excavation platform, and the GPS positioning system on the top of the boom is used to accurately position the grab;
  • S6 Analyze the three-dimensional landforms after excavation, and continue construction in accordance with S4-S5 for under-excavated areas that have not reached the design elevation until all areas reach the design elevation;
  • the S3 is specifically based on the evaluation and analysis of the construction effects of typical construction tests and it is concluded that the DCM overgrouted pile body needs to be broken and excavated in two layers, thereby effectively avoiding over-excavation or under-excavation in one excavation.
  • the first layer shall be excavated 0.3m and the second layer shall be excavated 0.2m.
  • adjacent buckets should be stacked 0.5m left and right in the direction parallel to the foundation trench.
  • the DCM super-grouted pile body needs to be broken and excavated in two layers, with overlapping buckets of 1-1.5m in the vertical foundation trench direction to prevent leakage of excavation, effectively break the pile head, and ensure construction quality.
  • the above-water demolition and excavation platform in S1 includes a hull and a deck.
  • the four corners of the hull are fixedly connected with anchor cables.
  • the demolition and excavation equipment and living area are provided on the deck.
  • the above-water demolition and excavation platform A turntable is provided on the right side of the turntable.
  • a demolition and excavation control room is provided at the top of the turntable.
  • the demolition and excavation control room is hinged with the bottom end of the boom.
  • the top of the demolition and excavation control room is provided with a traction device.
  • the traction equipment is connected to the grab bucket through a traction rope, and a GPS positioning system is fixedly connected to the top of the boom.
  • the S4 is specifically to control the water excavation platform to achieve directional and quantitative forward, left, and right movements by controlling the retraction and release of the anchor cable during the construction process.
  • the GPS on the top of the boom is used.
  • the positioning system accurately locates the excavation points of the main body of the DCM pile head, and performs excavation excavations in sequence.
  • the water breaking and excavation platform is moved to the next area for breaking and excavation construction.
  • the present invention realizes the precise and efficient removal and excavation of the main body of the underwater DCM pile head, avoids under-excavation and over-excavation, and ensures the smoothness of the removal interface, thus ensuring the construction quality and the construction process at the same time. It will not cause damage to aquatic life, reduces the impact of the immersed tube tunnel foundation trench on the underwater ecological environment, and solves the problem.
  • the application of DCM technology in our country is mainly concentrated on land, even if it is used in soft soil foundation treatment such as riverside ports. There is no need to remove the pile body of the overfilled part, which is a problem that is inconvenient when cleaning the cement mixing piles on the seabed with the existing technology.
  • Figure 1 is a schematic front structural view of the above-water demolition and excavation platform of the present invention
  • Figure 2 is a schematic structural diagram of the above-water demolition and excavation platform of the present invention.
  • Figure 3 is a schematic flow chart of the method of the present invention.
  • the construction process includes the following steps:
  • S6 Analyze the three-dimensional landforms after excavation, and continue construction in accordance with S4-S5 for under-excavated areas that have not reached the design elevation until all areas reach the design elevation;
  • the underwater DCM pile head main body 6 is accurately and efficiently broken and excavated, avoiding under-excavation and over-excavation, ensuring the smoothness of the breaking interface, thereby ensuring the construction quality, while the construction process It will not cause damage to aquatic life, reduces the impact of the immersed tube tunnel foundation trench on the underwater ecological environment, and solves the problem.
  • the application of DCM technology in our country is mainly concentrated on land, even if it is used in soft soil foundation treatment such as riverside ports. There is no need to remove the pile body of the overfilled part, which is a problem that is inconvenient when cleaning the cement mixing piles on the seabed with the existing technology.
  • the S3 is specifically based on the evaluation and analysis of the construction effects of typical construction tests and it is concluded that the DCM overgrouted pile body needs to be broken and excavated in two layers, thereby effectively avoiding over-excavation or under-excavation in one excavation.
  • the DCM overgrouted pile body needs to be broken and excavated in two layers, the first layer is excavated 0.3m, and the second layer is excavated 0.2m.
  • the DCM super-grouted pile body needs to be broken and excavated in two layers, and the adjacent buckets should be stacked 0.5m left and right in the direction parallel to the foundation trench.
  • the DCM super-grouted pile body needs to be broken and excavated in two layers, with overlapping buckets of 1-1.5m in the vertical foundation trench direction to prevent leakage of excavation, effectively break the pile head, and ensure construction quality.
  • the above-water demolition and excavation platform 1 in S1 includes a hull and a deck 9.
  • the four corners of the hull are fixedly connected with anchor cables 7.
  • the deck 9 is provided with demolition and excavation equipment and a living area 11.
  • the breaking and excavation control room 11 is hinged with the bottom end of the boom 3.
  • the top of the excavation control room 11 is provided with a traction device 12, which is connected to the grab bucket 5 through a traction cable, and the top of the boom 3 is fixedly connected with a GPS positioning system 8.
  • the S4 specifically means that during the construction process, by controlling the retraction and release of the anchor cable 7, the above-water excavation platform 1 is controlled to achieve directional and quantitative forward, left, and right movements, and by controlling the rotation angle of the turntable 2, the crane arm is used.
  • the GPS positioning system 8 at the top of 3 performs precise positioning of the excavation points of the DCM pile head body 6, and the excavation points are excavated in sequence.
  • the first step inspect various construction equipment of the above-water demolition and excavation platform 1, and prepare for the demolition and excavation construction of the DCM pile head body 6; the second step: move the above-water demolition and excavation platform 1 to the location to be demolished Above the excavation area, import the drawn DCM pile head body 6 breaking and excavation point layout into the GPS control system of the DCM pile head body 6 breaking and excavation control room 1110, and fix the above-water breaking and excavation platform through the hanging anchor cable 7 1.
  • Step 3 Select the DCM test area to conduct a typical construction test of demolition and excavation;
  • Step 4 Lower the grab 5 to the main body of the DCM pile head Carry out breaking and excavation at 6 places;
  • Step 5 After the breaking and excavation is completed, drive the water breaking and excavation platform 1 out of the first excavation area 13, conduct multi-beam water depth measurement of the second excavation area 14, and establish the second excavation Excavate the three-dimensional landforms of area 14;
  • Step 6 Analyze the three-dimensional landforms after the excavation, and continue construction in the under-excavated areas that have not reached the design elevation according to steps four to five until all areas reach the design elevation;
  • Step 7 Fix the grab 5 on the deck 9, rotate the boom 3 to above the water breaking and excavation platform 1, maintain the mechanical equipment, and prepare for the breaking and excavation in the next area.
  • the directional mobile platform is realized Complete excavation of the main body 6 of the DCM pile head.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Earth Drilling (AREA)

Abstract

Processus de construction de dégagement de tête de pieu DCM sous-marin respectueux de l'environnement. Le processus de construction comprend les étapes suivantes : étape I, le maintien de dispositifs de construction sur une plateforme de rupture et d'excavation d'eau (1) ; étape II, l'entraînement de la plateforme de rupture et d'excavation d'eau (1) à la position au-dessus d'une zone à soumettre à la rupture et à l'excavation, et la fixation de la plateforme de rupture et d'excavation d'eau (1) au moyen de câbles d'ancrage de torsion (7) ; étape III, la sélection d'une zone de test DCM pour un test de construction typique de rupture et d'excavation ; étape IV, l'abaissement d'un godet de préhension (5) vers un corps de tête de pieu DCM (6) pour la rupture et l'excavation ; étape V, l'entraînement de la plateforme de rupture et d'excavation d'eau excessive (1) hors d'une première zone d'excavation (13), la réalisation d'une mesure de profondeur d'eau à faisceaux multiples sur une seconde zone d'excavation (14) et l'établissement d'une carte géomorphologique tridimensionnelle de la seconde zone d'excavation (14) ; étape VI, l'analyse d'une carte géomorphologique tridimensionnelle après la rupture et l'excavation, et selon l'étape IV à l'étape V, la poursuite de la construction dans une zone de sous-excavation qui n'atteint pas une élévation conçue ; et étape VII, la préparation pour la rupture et l'excavation de la zone suivante, et la circulation de cette manière.
PCT/CN2022/105388 2022-06-22 2022-07-13 Processus de construction de dégagement de tête de pieu dcm sous-marin respectueux de l'environnement WO2023245766A1 (fr)

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Application Number Priority Date Filing Date Title
CN202210712070.4A CN115182346A (zh) 2022-06-22 2022-06-22 一种环保型海底dcm桩头清除施工工艺
CN202210712070.4 2022-06-22

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Publication number Priority date Publication date Assignee Title
CN117283714B (zh) * 2023-09-12 2024-05-10 中交第四航务工程局有限公司 一种dcm桩间隆起土的搅拌装置及其施工方法

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US20040216570A1 (en) * 2003-05-02 2004-11-04 Clark Wilbur L. Underwater pile cutting apparatus and method of use
WO2016067272A1 (fr) * 2014-10-31 2016-05-06 D.E.C.O. Nv Dispositif de découpage de pieux
CN107165166A (zh) * 2017-07-11 2017-09-15 中国水利水电第五工程局有限公司 一种桩头智能化破除方法及装置
CN111119181A (zh) * 2020-01-17 2020-05-08 中交第四航务工程勘察设计院有限公司 一种水下混凝土桩施工的桩头切除方法
CN111893944A (zh) * 2020-06-30 2020-11-06 河海大学 一种环保型海底礁石清理施工工艺
CN112227296A (zh) * 2020-08-18 2021-01-15 中交广州航道局有限公司 水下深基槽破岩施工方法

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CN105586969A (zh) * 2014-11-14 2016-05-18 赖文平 钻孔灌注桩桩头分层凿除法
KR102274866B1 (ko) * 2019-11-04 2021-07-09 주식회사케이베츠 파일절단유닛을 갖는 해저 관입 파일 제거방법 및 제거장치
CN112761154A (zh) * 2020-12-31 2021-05-07 中交一公局第二工程有限公司 一种混凝土灌注桩桩头的破除方法
CN114150669A (zh) * 2021-12-15 2022-03-08 中国水利水电第五工程局有限公司 一种水下钢管桩桩头快速截桩的施工平台及其施工方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040216570A1 (en) * 2003-05-02 2004-11-04 Clark Wilbur L. Underwater pile cutting apparatus and method of use
WO2016067272A1 (fr) * 2014-10-31 2016-05-06 D.E.C.O. Nv Dispositif de découpage de pieux
CN107165166A (zh) * 2017-07-11 2017-09-15 中国水利水电第五工程局有限公司 一种桩头智能化破除方法及装置
CN111119181A (zh) * 2020-01-17 2020-05-08 中交第四航务工程勘察设计院有限公司 一种水下混凝土桩施工的桩头切除方法
CN111893944A (zh) * 2020-06-30 2020-11-06 河海大学 一种环保型海底礁石清理施工工艺
CN112227296A (zh) * 2020-08-18 2021-01-15 中交广州航道局有限公司 水下深基槽破岩施工方法

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